CVE-2021-41918

Name: CVE-2021-41918
Creator: NVD / NIST
Published: 2021-10-08T16:15:08.293+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2021-41918 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. webTareas version 2.4 and earlier allows an authenticated user to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data and achieve a Reflected Cross-Site Scripting attack against the platform users and administrators. The issue affects every endpoint on the application because it is related on how each URL is echoed back on every response page.. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

webTareas version 2.4 and earlier allows an authenticated user to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data and achieve a Reflected Cross-Site Scripting attack against the platform users and administrators. The issue affects every endpoint on the application because it is related on how each URL is echoed back on every response page.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.55%

41.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Webtareas Project	Webtareas	<= 2.4

References

https://n4nj0.github.io/advisories/webtareas-multiple-vulnerabilities-i/Exploit, Third Party Advisory
https://n4nj0.github.io/advisories/webtareas-multiple-vulnerabilities-i/Exploit, Third Party Advisory

Timeline

Published: Oct 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41918?

How severe is CVE-2021-41918?

CVE-2021-41918 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41918?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41918?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST